Valve for resilient tubes



April 30, 1929.

G NENAEss VALVE FOR RESILIENT TUBES Filed April 4, 1927 Patented Apr.30, 1929.

UNITED STATES GUSTAV NERNJESS, OF HOP, NEAR BERGEN, NORWAY.

VALVE FOR RESILIENT TUBES.

Application filed April 4, 1927, Serial No. 180,908, and in Norway April15, 1926.

The object of this invention is to provide a valve rulaptcd to be usedin connection with resilient tubes. such as rubber tubes and the like.Another object is to provide a valve which is easy to handle and whichmay be opcT'atcd entirely by the mouth r another oh ieet is to provide avalve especially adapted for use in connection with air cushions, airfilled lite jackets and the like, and which automatically shuts off thecommunication with the said cushion or jacket when the filling of thesame with air ceases.

One cmlmdiment of my invention is illustrated by way of example on theannexed d in win gr at which:

Fig. '1. shows the valve seen from one side thereof. the tube beingshown in section and Fig. .3 shows the valve seen from the top end.

The valve eousi itutcs a somewhat eonically shaped ilug. he size ofwhich is so chosen. in relation to the tube 1. in which it is to beinserted. that the plug when inserted in the tube will be held firmlythereby. The plug is divided in. two halves. preterably along a middleplane parallel with the longitudinal axis of the tube. and in suchmanner that the opposite :laccs of the two halves 2 and 3 are exactlyeven and are pressed airtight together by the pressure which thesurrounding tube 1 exerts. Ea ch of the halves 2 and 3 are provided withan extension. 4 and 5, respectivel v. which project beyond the end ofthe tube. Each of the extensions is provided with a flattened surfacewhich surit'aces normally do not make contact with each other but forman acute angle thercbetween. as shown in Fi 1.

Through the extension 4 and part of the proper member 2 is arranged achannel 7 the inner end of which opens against the flat surface of themember 3 whereby the said inner channel end is normally closed by themember 3. The outer end of the channel 7 opens into the air at or nearthe top of the extension 4.

Near the upper end thereof one of the conical halves is provided with atransverse rib 6 of rounded or semi-circular cross section, fitting intoa corresponding groove in the other coni ral member. Just at this ribthe flat surfaces of the extensions begin to diverge from each other.Thus the said rib will serve as a sort of hinge if the extensions 4 andare moved against each other by pressure being exerted thereupon, andthereby the halves 2 and 3 are moved away from each other so that theinner opening of the channel 7 becomes free and communication isestablished from the outer end of the channel and the interior of thetube 1.

As will be seen the extensions 4 and 5 form a sort of mouth piece themembers of which may easily be pressed together by means of the teeth,whereupon air may be blown into the tube 1 by means of the mouth.Therefore my valve well adapted for use in connection with air cushions,life ackets and similar means which are to be easily filled with air,and preferably without the neccs sity of using the hands or fingers foroperation of the valve. It Will also be seen that my valve issclt-coutrolling in that it. due to the elasticity of the tube 1,immediately shuts oil the connection between the channel 7 and theinterior of the tube 1 when the extensions are no longer forciblypressed against each other.

Having now particularly d scribed and as certained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is:

1. A valve for resilient tubes comprising a plug adapted to be insertedin the end of such tube. said plug being composed of two parts havingopposing plane surfaces, a channel extending through one of the parts,said channel open ing against the plane surface of the other part, saidparts at the upper end of the opposing inner surfaces thereof beingprovided one with a transverse rib of suitable crosssection and theother with a corresponding groove for receiving said rib.

Q. A valve according to claim 1 in which each of said parts is providedwith an extension protrudiue past the end of the tube, said extensionsdiverging from each other outside of the tube, the channel extendingthrough one of the parts and its extension.

GUSTAV NERNZESS.

